Toyota ZZT230 series, Repair Manual

Page: 305 / 821

DIAGNOSTICS
ENGINE
VSV and charcoal canister, and then clean vacuum hose between charcoal canister and
20 Check for o
�
n and short In harness and connector between EFI main relay
(Marking: E I) and
VSV
for CCV, and
VSV
for C
C
V
and
ECM (See page IN-30).
G Repair or replace harness or connector.
Check and
replace
ECM (See
page IN-30).
Check
VSV
for pressure
switching valve.
PREPARATION:
(a) Ccnnect the TOYOTA hand-held tester to the DLC3.
(b)
Turn the ignition switch ON and push the TOYOTA hand­
held tester main switch ON.
(c) Select the ACTIVE TEST mode on the TOYOTA hand-
held tester.
CHECK:
Check the VSV operation when it is operated by the TOYOTA
hand-held tester.
OK: VSV
Is
ON:
Air
from pert
E flows out through
pert
F. VSVIsOFF:
Air does not flow from port E to port
F.
Go to step
24.
22
Check operation of
VSV
for pressure switching valve (See page SF�1 ).
B
Go to step
23.